I spoke with D&D about what i can do about keeping this tranny together. I did the cryo treating this time so I will see how that works. My 4th gear race and bearing are still getting really hot. D&D suggested a tranny cooler obviously, but also say if I dont want to use a cooler then try gear lube. Anyone ever done this in a manual? What results did you notice. There is no paper syncs in the car anymore so the gear lube should be ok in there.

 

We use gearlube in our manuals at work. But then again they have anywhere from 10-60HP electric motors turning them. Not quite the power your making I would think a tranny cooler you would benefit more from but I will let someone else guide you

 

Don't know about the lubricant but with 1004 bad boys to the rear wheels you're going to have a tough time keeping a T56 alive. If you keep it off the track and on street tires you could probably get one of the G-force T56's to live. Otherwise I'd look to a Jerico or some other poison.

Good luck.

-Mindgame

 

I dont know how relevant it is if youre not gonna use ATF, but my trans builder has me run a gallon of Caterpillar fluid [used in heavy equipment transmissions, formulated for diesel--or twin turbo LT1--tq levels] along with my ATF.I was just taking it for granted that my 700 and my buddies 4l60s were gonna die regularly, but this one has had the [edit] beaten out of it and its perfect.Including an unfamiliar driver going 2-reverse at about 80mph.If youre interested ill get ya the specs..
A thinner synthetic gear lube would be have a better breakdown point/heat conductivity than ATF, yet still be OK to work with??Id let it warm up well though.
..4 what its worth..

 

Gear lube will make a T56 very hard to shift.

The synchros have to cut the oil film to get fricton to work, with thicker oil film that will make it hard for synchros do that and hard to shift.

Thicker oil will cause more drag and create more heat in the trans.

The Cyro treatment is a waste of money, sorry but somebody has to tell the truth. The people who sell cyro treatments sure don't.

I would run what the trans was designed for ATF or synthetic ATF.

At 1000 hp I don't think oil would make that much difference anyway. If you are shearing teeth off, that is due to load, shaft deflection, even the case will flex. Nothing that oil will fix.

Good Luck

Z28

 

I thought he said he was just having problems with too much heat, wasting his bearings/races.?.
I dont know, anywhere else you could find it witha stronger, more heat resistant material?

you could always rob a bank and get a hewland sequential.

 

Well not the input I wanted but...I called the viper dealer and they put 75w80 in the viper trans. I didnt want to spend $15 a qt on synthetic gear lube from a dealer so im trying valvoline 75w90. Moser never recommended synthetic lube in there rearends to begin with. If I remember correct syn doesnt dissipate heat very well. Ill run the car tomorrow and let everyone know if it works the way I hope

 

The yellow Viper that went 8's has a G-Force doesn't it? Seems to hold up.....not sure how long though?

 

I have a large truck,. the motor produces 1450ft/lbs tq,.we haul heavy,. and are licensed for 139,500lbs. i removed the trans cooler to fit the wet line on ,. i went to the synthetic gear oil and it dissipates the heat extremely well,.yes its expensive,. but you get what you pay for., $15.00 a qt is expensive??,.i would think that if you truly are producing 1000hp at the wheels,.the amount of time that the trans is seeing 1000hp for, would be not too long,and spending $60.00 for some good lube would seem to me a bargain.
I think in road race cars that high rpm and gear speeds, produce serious heat, and a cooler is often employed,.
jm2c
nick

 

With no pump and no lines, would you drill/plumb your own lines and then install your own inline pump?? Where would you install the cooler lines? Would this weaken the case?

TOM B

 

Wouldn't you just use the existing drain and fill holes to hookup the cooler lines to?

 

Dunno about the gear lube, but installing a pump and cooler sounds like a great idea, at least for the heat. I've heard of this being done before, but it's not very common; of course with 1000 @ the wheels, you're a good candidate to try it out. Just remember to fill all the new lines & other stuff so you can measure it and calculate how much extra fluid you'll have to add.

 

Nascar has coolers on the rear end and tranny.

 

use honda ATF in your T56 you will swear it's a new trans

 

Unless you are doing extended high speed runs, I doubt you are having a overal fluid temp issue. Maybe localized over heating at the bearing.

Not sure on fluids. Is the tranny pro-shifted, or do you just have upgraded blocker ring material?